摘要:
A method and a device for cold gas spraying. According to the invention, energy is supplied to the particles with microwave technology. For that purpose, the nozzle in which the gas jet and particles are accelerated is surrounded by a microwave waveguide and/or a/the microwave waveguide encloses at least in part the spray-free jet between the nozzle outlet and the substrate. Advantageously, one section of the nozzle outlet is made of a ceramic.
摘要:
An interface for a data node of a data network including a plurality of data nodes are connected to each other by way of a bus line and activatable in selective manner by address codes transmitted via the bus line. The interface includes an activating address filter allowing addresses intended for the associated data node to be recognized.
摘要:
A compact body is made by thermal spraying by high-velocity flame spraying or by cold-gas spraying. By heating the compact body to a temperature equal to or preferably above the breakdown temperature of the blowing agent, followed by cooling, porous hollow bodies or metal foams are produced.
摘要:
A cooling element for shaft furnaces provided with a refractory lining, particularly blast furnaces is made of copper or a low copper alloy and is provided with coolant ducts arranged in the interior of the element. The cooling element is composed of an extruded or rolled section which in the interior thereof has a plurality of cooling ducts which are round or have a shape which deviates from the circular shape. The cooling element is provided with lateral webs. The cooling element is equipped on the side facing away from the blast furnace wall in vertical direction with at least one continuous slag rib and the cooling element is equipped on the side facing the blast furnace wall with at least one fastening rib.
摘要:
High resolution and accuracy of the measured values for detection of the position, speed and/or acceleration of a drive is ensured. The tolerances are determined and considered in signal evaluation on a partitioned basis. Measurement errors caused by inaccuracies of the signal generator due to manufacturing difficulties are greatly reduced or eliminated such that use of signal generators without particularly high quality specifications is possible. Thus, use of less exact components in generation and detection is possible.
摘要:
A top closing device for shaft furnaces, particularly blast furnaces, including an inlet hopper with inlet pipe, a rotating, vertically non-adjustable chute carrier with rotary drive, a pivotable chute in the furnace interior with external drive means, and sealing members between the rotating and stationary components. The rotating chute carrier is mounted with a gear ring attached to a flange in a ball bearing slewing rim arranged on a catch basket. The rotary movement of the rotating chute carrier is effected outside of the furnace space by an electric motor drive with pinion. The catch basket is arranged on the furnace support ring of the gas seal hood. The pivoting or tilting movement of the chute relative to the furnace axis within the rotating chute carrier is effected by a hydraulic or electromechanical drive outside of the furnace space. An annular sealing member for sealing relative to the rotating chute carrier is mounted on the furnace support ring next to the flange of the catch basket. An annular sealing member for sealing relative to the stationary inlet pipe is mounted on the inner flange of the chute carrier.
摘要:
An internal or external annular surface of a ring which by cold-rolling is to be profiled with accompanying tangential expansion and substantial diametrical enlargement of the ring is preliminarily profiled by a metal-shaping process other than cold-rolling, the preliminary profile having distinctly defined lateral peripheral edges spaced from the lateral walls of the workpiece. The cold-rolling is effected by a cold rolling tool having formed on the working surface thereof facing the preliminarily profiled workpiece surface a profile which is shaped to make local contact with each of the edges of the preliminary profile of the ring and thereby begin compressively stressing the ring by the local contact before the cold rolling conforms the profile of the workpiece to the profile of the tool sufficiently to substantially increase the contact of the tool profile with the workpiece profile. The compressive stressing mitigates tensile stressing accompanying the aforementioned tangential expansion and substantial diametrical enlargement of the ring, thereby preventing the onset of cracking and other defects of the workpiece as the workpiece is cold-rolled.